When Fox came to Montgomery Junior College in 1962, he began as the assistant football coach. He served as an assistant for seven years. Also in 1962, Fox took over the baseball program, which he led for 19 years. Under Fox, the team has only one losing season in 1978. Fox was selected Maryland JUCO Coach of the Year and was awarded the Home Plate Club Sandlot Hall of Fame Award for his coaching success in baseball. He also earned a distinguished service award for education and baseball from the Metropolitan Baseball Umpires Association in 1986.

In 1963, Fox started MJC's wrestling program and coached for three years. In addition to his duties as a coach, Fox was the Rockville Campus athletic director for 13 years and was the Rockville Campus intramural director for six years. As a faculty member, Fox served as coordinator of the faculty advising cadre.